Why does God destroy Sodom and Gomorrah without warning, but offer Nineveh a chance to repent? The men who come to Lot's house could have just easily prophesied to the people of Sodom and Gomorrah that they must repent or they will be destroyed, like Jonah did at Nineveh.

Considering the reaction of the Sodomites to the presence of strangers, it doesn’t seem they’d be too receptive of admonition from such. (I’d post this as an answer if I had any source for it.)
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J. C. SalomonOct 7 '13 at 0:49

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I edited the question to clarify what I think you're asking. If it is incorrect, feel free to undo the edit
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MenachemOct 7 '13 at 0:49

The generation of the flood was also given a chance to repent.
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MenachemOct 7 '13 at 18:51

There were probably a minimum of 10 good men left in Ninveh so He gave them the option to repent but there were not even 10 good men in Sodom and Gemora. This is learned by the discussion Avraham has with G-d where he tries to argue about not destroying Sodom and G.

"probably" How do you know that? I understand it is a possible answer (and an interesting one) but what makes you able to evaluate its likelihood?
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Double AA♦Oct 7 '13 at 17:25

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I wonder if the reasoning goes in the other direction: God didn't destroy Nineveh, and therefore (per precedent) there must have been at least ten righteous people there.
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Monica Cellio♦Oct 7 '13 at 17:29

Very interesting idea! Doesn't Gd say he won't destroy SnG if there are 10 righteous, though? The option to repent is never mentioned, it seems pretty black and white. Are you saying its implied, given the events at Ninveh?
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Baby SealMar 19 '14 at 18:30